From patchwork Sat Mar 15 20:15:36 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 14018237 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9F2ACC28B28 for ; Sat, 15 Mar 2025 20:20:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=DuZ/crdGc26iszRm2Ygt7jerJJZWI96IYNjt0v5KnSM=; b=4KHcgldyh7l3F9b4O6XeGg1+wm 6MQHVgHQD5Y40a3YE91Z0Jjo11VEbxnJU/hooY1PjCKnLsDnawEYe4YsQkF3oPmnsHDUsh4ADTJXk V56yHL2Tgu2eTkJFTosO6X1GJaSvIJi4NxPrRZ0115N2GoaXtRspeu12pwuPt3D9Gs6gbDGj1kz2R k467OrtdOIf3ccSsY36K+hmXAqLZKTYhfZbwBYjSdJFDlUbEgCoEuyf62Dq/oIPotEBUGnM2x1wJm sH0qw3Kf5ISyvvW9QmHHEQiXowtr5ZMdkaGeQ0dXQt8mEWY2R6WGgj263vlASDVbF/6EQUSrR/oQU yGLz8sRA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1ttXzL-0000000GoLv-30D2; Sat, 15 Mar 2025 20:20:07 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1ttXvL-0000000GnRT-1wxq for linux-arm-kernel@lists.infradead.org; Sat, 15 Mar 2025 20:16:00 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 5B3405C4382; Sat, 15 Mar 2025 20:13:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56371C4CEE9; Sat, 15 Mar 2025 20:15:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742069757; bh=ce45hTdaEpFy2QpraH0ZrMeEMIsCGcxs2/r8PQnCB4I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L9hWYw9WrbGTWUJaOVmESjkIwtQr902psTdxYdA+Kty7jkGwfjdLBPBxkh8PguMGd 4cOCqpZ7BwFVe+Kd/oPf0HFffeRnxRUCsYDDBBUpmJhwW+GATHh9r5TJU69qG8aPLR /ptE87LGlu+ASzit/SZmFK5szS5CqH4c/q9y2gvoTRdiXY3w/FO4E1jsvQmSv7gxmX SJuLJ9Mu+bwnm2Eb2KO23zSaPK/Afhd5ejL4KIP5Ou7AQDOy7nuYoJLgjKA2XUN3En IdYeTeCTA1u9SJW6FeCYI+Kd/ii5ZR5ZrUEXtgcSlNKh57oc2ASFbKQMwaeiZ2Canu SIJfTIKCyzB7g== From: Bjorn Helgaas To: Frank Li Cc: Rob Herring , Saravana Kannan , Jingoo Han , Manivannan Sadhasivam , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Richard Zhu , Lucas Stach , Shawn Guo , Sascha Hauer , Fabio Estevam , Niklas Cassel , Pengutronix Kernel Team , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, Bjorn Helgaas Subject: [PATCH v12 01/13] PCI: dwc: Use resource start as iomap() input in dw_pcie_pme_turn_off() Date: Sat, 15 Mar 2025 15:15:36 -0500 Message-Id: <20250315201548.858189-2-helgaas@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250315201548.858189-1-helgaas@kernel.org> References: <20250315201548.858189-1-helgaas@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250315_131559_580801_7174C295 X-CRM114-Status: GOOD ( 11.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Frank Li The msg_res region translates writes into PCIe Message TLPs. Previously we mapped this region using atu.cpu_addr, the input address programmed into the ATU. "cpu_addr" is a misnomer because when a bus fabric translates addresses between the CPU and the ATU, the ATU input address is different from the CPU address. A future patch will rename "cpu_addr" and correct the value to be the ATU input address instead of the CPU physical address. Map the msg_res region before writing to it using the msg_res resource start, a CPU physical address. Link: https://lore.kernel.org/r/20250313-pci_fixup_addr-v11-1-01d2313502ab@nxp.com Signed-off-by: Frank Li Signed-off-by: Bjorn Helgaas --- drivers/pci/controller/dwc/pcie-designware-host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index ffaded8f2df7..ae3fd2a5dbf8 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -908,7 +908,7 @@ static int dw_pcie_pme_turn_off(struct dw_pcie *pci) if (ret) return ret; - mem = ioremap(atu.cpu_addr, pci->region_align); + mem = ioremap(pci->pp.msg_res->start, pci->region_align); if (!mem) return -ENOMEM;